enhance: [2.4] Utilize coll2replica mapping when getting rg by collection (#32892) #32922
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Cherry-pick from master
pr: #32892
See also #32165
In old
GetResourceGroupByCollection
implementation, it iterates all replicas to match collection id, which is slow and CPU time consuming. This PR make it utilize the coll2Replicas mapping by callingGetByCollection
and mapping replicas into resource group.